Apparatus for feeding anti-incrustation fluid into boilers.



NO. 778,459. PAITENTBD DEC. 27, 1904.

, A. MQWILLIAMS. APPARATUS FOR FEEDING ANTI-INORUSTATION FLUID INTOBOILERS.

APPLICATION FILED APR. 27. 1903.

wrrwaSsss NVENTOR W1" i I ATTORN EYS UNITE STATES Patented December 27,1904.

PATENT OFFICE.

APPARATUS FOR FEEDING ANTI-INCRUSTATION FLUID INTO BOILERS-SPECIFICATION forming part of Letters Patent No. 778,459, dated December27, 1904.

Application filed April 2'7, 1903. Serial No. 154,501.

To all whom it may concern.- v

Be it known that I, ALEXANDER MoWIL- LIAMS, a subject of the King ofGreat Britain and Ireland, and a resident of Mickleover, in the countyof Derby, England, have invented a certain new and useful Apparatus forFeedingAnti-Incrustation Fluid Into Boilers, (for which I have appliedfor a patent in Great Britain, said application being numbered 381 anddated January 7 1903,) of which the following is a specification.

' The objects of my invention are to provide an improved device orapparatus that will admit of boiler fluid of any kind (hereinafterreferred to as the fluid) for softening the water and preventingincrustation, being passed therein while under full pressure of steam,so that either a regular or intermittent flow of fluid may be passedinto the boiler and mixed with the water, and so insure the greatestpossible benefit being derived from the fluid, or any given quantity maybe fed to the boiler at any desired intervals, a further object of myinvention being to provide a sight-feed in connection with suchapparatus or device, as hereinafter described.

Referring to the drawings, which form part of this specification, Figure1 is a front elevation, partly in section, of my invention; and Fig. 2 asection through the nozzle.

In the application of my invention a portion of the front end of theboiler is indicated by the letter a.

The fluid vessel j is arranged separately from the feed-pipe is, towhich it is connected by means of a branch pipe Z and the mainconnecting-pipe m. Said pipe m extends from the feed-pipe forward andupward to the sightfeed or gage-glass n, which is arranged adja cent tothe vessel 1' and is connected thereto by a pipe q, pipes m and mconnecting the sight-feed or gage-glass with the feed-pipe is, pipe mbeing connected to the said feed-pipe at a point above the feed-valve 8.At the junction of the two pipes Z and m is a threeway cock 0. There isalso a cock p on the pipe 9. Above the gage-glass on the pipe m ispreferably arranged another regulatingcock r. A back-pressure valve 2,is provided in the pipe m for trapping the water therein.

The top of the fluid vessel is provided with any suitablefeeding-orifice u and an air-cock a and drain-cock u", to be regulatedas desired. The air-cock, in conjunction with the cock 1) on the pipe,connecting the fluid vessel with the sight-feed tube will regulate thequantity of fluid drawn in with each stroke of the feed-pump. Whenfeeding continuously, the cock 0 on the branch below the fluid vessel isclosed against any downward feed of fluid through the pipe Z, while thecocks p and 1 and the air-cock are opened. The deliverynozzl'e o,through which the fluid passes in the gage-glass, is preferably arrangedso as to project upwardly through the center of the gageglass, so thatthe water coming from the main feed-pipe passes all round it, as shownby the arrows, at each stroke of the feed-pump or as the water isinjected into the boiler, and thusv a certain quantity of fluid issucked or drawn from the nozzle and thoroughly mixed with thefeed-water.

The apparatus may be worked either with or without steam from theboiler.

When used for feeding occasional quantities of fluid to the boiler, thefluid-regulating cook 10, between the fluid vessel and sightfeed, isclosed. Also the cock 0, a lower valve u on the feed-pipe, and thefeed-valve s are closed. The vessel is then filled or partly filled withfluid and the feeding-orifice tightly closed. The cock 0 on the branchpipe Z below the vessel is then opened to allow the fluid to descend andto pass to the feed-pipe and into the boiler with the feed-water whenthe feedvalve 8 is opened. This may be done daily or as required.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a device for feeding anti-incrustation fluid to boilers,incombination with the boilerfeed pipe, a receptacle, a sight-feedcommunicating therewith, pipes connecting said sightfeed with thefeed-pipe and a pipe Z connecting said receptacle with the saidconnectingpipes, said pipe Z being independent of the sight-feed.

2. In a device of the class described, in combination with theboiler-feed pipe, a receptacle, a sight-feed, rneans of communicationbetween said sight-feed and the receptacle, pipes connecting thesight-feed with the boiler-feed pipe, and means for connecting thereceptacle with the boiler-feed pipe, said means being independent ofthe sight-feed, substantially as described.

3.- In a device of the class described, in combination with theboiler-feed pipe, a receptacle, a sight-feed, a nozzle therein, a pipeconnecting said nozzle with the receptacle and pipes connecting thesight-feed with the feedpipe.

4:. In a device of the class described in combination, the feed-pipe, areceptacle, a sightfeed, a nozzle therein, a pipe connecting saidALEXANDER MoWILLIA MS.

Witnesses:

H. SWINDELL, A. F. RICHARDSON.

